C.R.S. § 18-8-704

(1) A person commits intimidating a witness or victim if: (a) By use of a threat, act of harassment as defined in section 18-9-111 , or act of harm or injury to any person or property directed to or committed upon: (I) A witness in any criminal or civil proceeding; (II) A victim of any crime; (III) A person he or she believes has been or is to be called or who would have been called to testify as a witness in any criminal or civil proceeding or a victim of any crime; (IV) A person he or she believes may have information relevant to a criminal investigation; (V) A member of the witness’s family; (VI) A member of the victim’s family; (VII) A person in close relationship to the witness or victim; (VIII) A person residing in the same household with the witness or victim; (IX) A person he or she believes may be able to exert influence upon the witness or victim; or (X) Any person who has reported a crime or who may be called to testify or who testifies as a witness to or victim of any crime; and (b) He or she intentionally attempts to or does: (I) Influence the witness or victim to testify falsely or unlawfully withhold any testimony; or (II) Induce the witness or victim to avoid legal process summoning him or her to testify; or (III) Induce the witness or victim to absent himself or herself from an official proceeding; or (IV) Inflict such harm or injury prior to such testimony or expected testimony; or (V) Influence the witness, victim, or any person with knowledge of relevant information to withhold information from, or provide false information to, law enforcement, a defense attorney, or a defense investigator. (2) Intimidating a witness or victim is a class 4 felony.